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@Emergenzone experience and skill i suppose.
if there is one thing about html, css and javascript that i've learned during my life:
the versatility and fine grained control you obtain after mastering them is a godsend.
you can literarily create anything with it and make piles of money in the process.

@GottZ Do you have any recommendations on where to learn this level of CSS skills, any online tutorials you have done, or articles you have read? This is the coding I think is super interesting and I would like to learn and understand the complexities of what is above.

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